Man is a tool-using animal. Without tools he is nothing, with tools he is all.

With stupidity and sound digestion, man may front much.

A man's felicity consists not in the outward and visible blessing of fortune, but in the inward and unseen perfections and riches of the mind.

In a different time, in a different place, it is always some other side of our common human nature that has been developing itself. The actual truth is the sum of all these.

Permanence, perseverance and persistence in spite of all obstacle s, discouragement s, and impossibilities: It is this, that in all things distinguishes the strong soul from the weak.

He who cannot withal keep his mind to himself cannot practice any considerable thing whatsoever.

The real use of gunpowder is to make all men tall.